TY - JOUR
T1 - Dissociative reactions of [Au25(SR)18]− at copper oxide nanoparticles and formation of aggregated nanostructures
AU - Roy, Jayoti
AU - Mondal, Biswajit
AU - Vishwakarma, Gaurav
AU - Nonappa, null
AU - Vasanthi Sridharan, Nishanthi
AU - Krishnamurthi, Pattabiraman
AU - Pradeep, Thalappil
N1 - Funding Information:
We thank the Department of Science and Technology, Government of India, for supporting our research programme. J. R. and G. V. thank IIT Madras for the doctoral research fellowships. B. M. thanks IIT Madras for the postdoctoral fellowship. N. V. S. thanks the Pradeep Research Group for a summer project opportunity. T. P. acknowledges funding from the Centre of Excellence on Molecular Materials and Functions under the Institution of Eminence scheme of IIT Madras. N. acknowledges the Academy of Finland project funding (no. 352900), the Photonics Research and Innovation (PREIN) flagship and facilities at the OtaNano-Nanomicroscopy Center (Aalto-NMC).
Publisher Copyright:
© 2023 The Royal Society of Chemistry.
PY - 2023
Y1 - 2023
N2 - Reactions between nanoclusters (NCs) have been studied widely in the recent past, but such processes between NCs and metal-oxide nanoparticles (NPs), belonging to two different size ranges, have not been explored earlier. For the first time, we demonstrate the spontaneous reactions between an atomically precise NC, [Au25(PET)18]− (PET = 2-phenylethanethiolate), and polydispersed copper oxide nanoparticles with an average diameter of 50 nm under ambient conditions. These interparticle reactions result in the formation of alloy NCs and copper-doped NC fragments, which assemble to form nanospheres at the end of the reaction. High-resolution electrospray ionization mass spectrometry (ESI MS), transmission electron microscopy (HR-TEM), electron tomography, and X-ray photoelectron spectroscopy (XPS) studies were performed to understand the structures formed. The results from our study show that interparticle reactions can be extended to a range of chemical systems, leading to diverse alloy NCs and self-assembled colloidal superstructures.
AB - Reactions between nanoclusters (NCs) have been studied widely in the recent past, but such processes between NCs and metal-oxide nanoparticles (NPs), belonging to two different size ranges, have not been explored earlier. For the first time, we demonstrate the spontaneous reactions between an atomically precise NC, [Au25(PET)18]− (PET = 2-phenylethanethiolate), and polydispersed copper oxide nanoparticles with an average diameter of 50 nm under ambient conditions. These interparticle reactions result in the formation of alloy NCs and copper-doped NC fragments, which assemble to form nanospheres at the end of the reaction. High-resolution electrospray ionization mass spectrometry (ESI MS), transmission electron microscopy (HR-TEM), electron tomography, and X-ray photoelectron spectroscopy (XPS) studies were performed to understand the structures formed. The results from our study show that interparticle reactions can be extended to a range of chemical systems, leading to diverse alloy NCs and self-assembled colloidal superstructures.
U2 - 10.1039/d3nr00897e
DO - 10.1039/d3nr00897e
M3 - Article
AN - SCOPUS:85153209852
SN - 2040-3364
VL - 15
SP - 8225
EP - 8234
JO - Nanoscale
JF - Nanoscale
IS - 18
ER -